Judaism is a religion, however it is a national religion (like Hinduism), being that most of the people that follow the religion (or customs) belong to the same ethnic group. While there are divisions such as Ashkenazi, Sephardi, Mizrachi, Beta Israeli, Bene Israeli, Menashe and so forth, it derives from being separated from each other and absoring the customs (and even beliefs) of their gentile neighbors (and hosts). Plus, Jews look different because of mixing with their gentile neighbors too, but in instances they are still "known" for their Semitic features (in Europe, Jews are/were known for being dark, in African for being light). Yes, Philistines, Phoenicians, etc.. are not technically Arabs, but modern day Egyptian are (not to be confused with ancient Kemet). Yes, Yemeni Jews and other Mizrachi (and some Sephardi) can be considered "Arab Jews" by some, but again, if addressing ethnicity, they are labeled under Jews and not Arabs. I hope this helps.
Saudi Arabia beheads four, marking 100th execution this year (DPA)
from the article: Israeli population stands at 7,695,000 at end of 2010